In a world that is becoming increasingly hostile towards Islam and Muslims, the need for solidarity amongst Muslims has become acutely pronounced. It would be logical to expect from advocates of such solidarity that they do not actively engage in or support activities that might prove disastrous to Muslim unity, and that they would by no means allow such activities to exist. What, then, are the implications of unabated Shi‘i missionary activity in Sunni societies, with the full support—by deed or by acquiescence—of the Iranian government?